I really like Jones, but I agree with what seems to be a large majority of people here and football fans in general, RB's are just not the position you want to find yourself paying top dollar to. There is no doubt Jones is a top 5 back in the league and deserves the money, I just don't see that huge of a drop off by giving 1/2 (or even less) the money to Williams, use a 4th round pick on a rookie and potentially sign a FA.
I think we have all noticed that both Jones and Williams stats have increased since MLF took over, I don't think that is a coincidence, MLF uses them both much more than MM did, especially Jones as a receiver. But while Jones carries and yards are up, his yards/carry are down. Williams on the other hand has increase his ave. yards/carry.